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Finding the Fourth Proportional to 91,309.54, 136,718.19 and 59,641.18

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Solution

The fourth proportional to 91,309.54, 136,718.19 and 59,641.18 is: 89,301.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,309.54 : 136,718.19 = 59,641.18 : x
  2. Step 2: Convert to fraction form
    91,309.54/136,718.19 = 59,641.18/x
  3. Step 3: Cross multiply
    91,309.54x = 136,718.19 × 59,641.18
  4. Step 4: Simplify right side
    91,309.54x = 8,154,034,179.06
  5. Step 5: Solve for x
    x = 8,154,034,179.06/91,309.54
  6. Step 6: Final answer
    x = 89,301.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.